Firm Profile > Curtis, Mallet-Prevost, Colt & Mosle LLP > Paris, France

Curtis, Mallet-Prevost, Colt & Mosle LLP
75008 PARIS

Dispute resolution: International arbitration Tier 3

Curtis, Mallet-Prevost, Colt & Mosle LLP exclusively acts for states and state-owned entities in investor-state arbitration. The firm represented the Republic of Kazakhstan is a series of large investment cases dealing with various issues including pharmaceutical and oil and gas investments. The Paris team, which often handles cases alongside the London and New York offices, also manages disputes for Romania and Cyprus, for the latter notably in several matters concerning the banking sector. In addition, the practice takes on commercial arbitration and exequatur work. The highly experienced Geoffroy Lyonnet and Peter Wolrich co-head the practice.

Practice head(s):

Geoffroy Lyonnet; Peter Wolrich


‘Curtis has long been a go-to firm for international arbitration, particularly for large and complex cases involving states and state interests. The firm has a wealth of experience and expertise in such cases, and Peter Wolrich and his team in Paris are world-class.’

‘Peter Wolrich is one of the foremost practitioners in the field of international arbitration today. His teams implement and carry out his ethos and vision impeccably.’

Key clients



The Republic of Kazakhstan



National Oil Corporation of Libya



Tax Tier 5

Practice head(s):

Marco Blanco


‘They are a big law firm with expansive capabilities, yet you get a boutique and personalised feeling from the service.’

‘Marco Blanco goes out of his way to make sure you feel comfortable with the work and your situation. He organises the team to provide what is needed.’

‘The team is robust. They have the capacity to duly follow up on matters until completion. All options and risks are laid out clearly.’

‘Marco Blanco stands out as a true expert in international taxation matters. His many years in the field and the international scope of the matters he deals with on a day-to-day basis make Marco an outstanding source of experience and knowledge on the field.

‘Huge experience in advising on US and international tax problems. Excellent ability to identify difficult issues and address them.’

‘Marco Blanco is immensely hardworking and has huge insight into multi-jurisdictional tax problems. He is outstanding in dealing with clients and in finding solutions to difficult problems.’

‘They have been efficient, through and extremely reliable in all areas.’

‘Marco Blanco’s work ethic, clarity, patience and diligence have been second to none.’

Key clients

Government of India


The firm: Curtis, Mallet-Prevost, Colt & Mosle LLP, founded in 1830, was one of the first US law firms to develop a truly international practice. Dedicated to counselling clients involved with some of the most challenging transnational transactions and complex multijurisdictional disputes, Curtis represents multinational companies, international financial institutions, governments and state-owned entities, family and other privately held businesses, entrepreneurs and high-net-worth individuals. With offices in the United States, Europe, Latin America, the Middle East, and Central and East Asia, Curtis is located in the key business centres where clients need the firm most.

Areas of practice: Established in 1973, Curtis’ Paris office handles both international and French corporate and finance matters and international arbitration. It works closely with the firm’s 16 other offices. Many of Curtis’ Paris-based lawyers are multilingual and have business degrees in addition to their law degrees.

Curtis’ Paris office is a centre of excellence in international arbitration matters and undertakes arbitrations under the ICSID, ICC, UNCITRAL and other arbitration rules. Partners Peter Wolrich and Geoffroy Lyonnet are noted leaders in the field of international arbitration. Peter Wolrich served for 12 years as chairman of the ICC Commission on Arbitration. He was the principal draftsman of the ICC’s arbitration guide for in-house counsel and other party representatives, which was launched in 2014. Geoffroy Lyonnet co-chairs the ICC Task Force that edits the ICC Guide to National Procedures for Recognition and Enforcement of Awards under the New York Convention.

The highly regarded arbitration team continues to represent clients such as Turkmenistan, Venezuela and Kazakhstan as well as Russia, Macedonia and Cameroon.

On the commercial arbitration side, the team is notable for its comprehensive victory for French-listed Arkema in winning millions of Euros in counterclaims, and is currently handling a variety of commercial arbitrations, including post-M&A and construction disputes.

The corporate group, led by Remy Lerner, is notable for its cross-border investment transactions (projects and infrastructure, M&A, restructuring), spanning Africa, Europe and the US, particularly in the fields of mining and energy (power production, upstream and downstream oil and gas sectors). It has significant experience advising in particular African states in structuring and carrying out acquisitions and disposals of mining and oil and gas assets, and exploration and production contracts. Recent representations include advising the Republic of Gabon in various projects. The corporate group also regularly advises US companies and investment funds on their investments in France and Europe showcasing Curtis’ experience in cross-border corporate team work between offices.

The tax group, led by Marco Blanco, is best known for its advice and analysis of complex cross-border tax issues. Notable matters on which the tax group has advised include advising several Central Asian and African states on international tax matters.

The Paris office has further developed its international oil and gas state representation particularly in West and Central Africa, notably in the natural gas sector, with the active involvement of Remy Lerner, Marco Blanco and Geoffroy Lyonnet.

The Paris office is staffed by a dynamic and highly motivated team that includes French and American lawyers, many of whom are admitted to practice in both Paris and New York.

The Paris office is part of Curtis, Mallet-Prevost, Colt & Mosle LLP, a New York limited liability partnership.

Department Name Email Telephone
Energy/oil and gas
International arbitration
Mergers and acquisitions
Private equity
Sovereign wealth funds
Trusts and estates
Venture capital
Contact : Geoffroy Lyonnet
Other offices : Almaty
Other offices : Beijing
Other offices : Bogotá
Other offices : Buenos Aires
Other offices : Dubai
Other offices : Frankfurt
Other offices : Houston
Other offices : Geneva
Other offices : London
Other offices : Mexico City
Other offices : Milan
Other offices : Muscat
Other offices : New York
Other offices : Nur-Sultan
Other offices : Rome
Other offices : Washington DC